This paper examined the relative effects of wind shear characteristics and its relationship with aircraft operations using Sam Mbakwe Airport, Imo State as a case study. The study discussed the differences between wind shear measured at 20m above ground level and wind shear calculated at 100m above ground level using power-law equation. Data on wind shear and aircraft operations (flight delays and cancellations) were obtained from Nigerian Meteorological Agency (NIMET) and Nigerian Civil Aviation Authority (NCAA) respectively. Correlation and Regression Analyses were carried out for the calculated wind shear and flight delays and cancellations. Scatter plots were used to present the observations of wind shear, flight delays and cancellations. The study revealed that wind shear increases as altitude increases. It also revealed that the calculated wind shear had weak positive relationship with flight delays and cancellations. This implies that as wind shear increases, both flight delays and cancellations also increase. The correlation between wind shear calculated at 100m AGL and flight delays and cancellations were 0.193 and 0.394 respectively, showing that the calculated wind shear contributed to 51.3 percent and 67.3 percent of the flight delays and cancellations respectively. The regression relationship formulated was significant for the entire hypotheses because the P-values of the ANOVA were less than 0.05. Since the relationship was significant, the expressions can be used to predict the extent of flight delays and cancellations if the wind shear is known. The study therefore recommended that there should be training and retraining of the observers, meteorologists and engineers working with NIMET. By so doing, the aviation industry can be freed from the negative effects of wind shear.


Ahmed, A. S. and Omer, A. M. (2013).Surface wind characteristics and wind direction estimation for Kalar region/Sulaimani – North Iraq. Journal of University of Zakho 1(A) 2: 482 – 490.

Ajayi, O. O. (2010).The potential for wind energy in Nigeria. Journal of Wind Engineering34(3): 303 – 312.

Anyadike, R. N. C. (2009).Statistical methods for the social and environmental sciences. Ibadan, Nigeria: Spectrum Publishers.

Azad, K. A., Rasul, M. G., Islam, R. and Shishir, I. R. (2015). Analysis of wind energy prospect for power generation by three weibull distribution methods. The 7th International Conference on Applied Energy– ICAE2015, Dhaka, Bangladesh. Journal of Energy Procedia 75: 722 – 727. https://doi:10.1016/j.egypro.2015.07.499.

Enete, I. C., Ajator, U. and Nwoko, K. C. (2015).Impacts of thunderstorm on flight operations in Port Harcourt International Airport,Omagwa, Rivers State, Nigeria. International Journal of Weather, Climate Change and Conservation Research 1(1): 1 – 10.

Harding, K. (2011).Thunderstorm formation and aviation hazards. WFO, Topeka, KS.

Jones, B. (2004a). Space weather effects on aircraft operations.Proceedings of the NATO advanced research workshop on effects of space weather on technology infrastructure, Rhodes, Greece 25-29 March 2003, Kluwer2(176): 215-234.

Mathew, S. (2006).Wind energy: fundamentals, resource analysis and economics. Kerala, India.

Matthews-Njoku, E. C. and Onweremadu, E. U. (2007).Adoptability of planted fallows and efficacy of natural types in fertility regeneration of a Typic Paleudult. An International Journal of Nature and Science 5 (3): 12 – 19.

Onyeagocha, S. U. O., Ohajianya, D. O., Nnadi, F. N., Ehirim, N. C., Emenyeonu, C. A., Anaeto, F. C., Osugiri, I. I., Nwaiwu, I. U., Onyeagocha, O. I. G. and Onyeagoro, C. R. (2014).

Nigeria: A critical factor in rural poverty alleviation. International Journal of Agriculture and Rural Development 17 (2): 1811 – 1820.

Opara, A. I., Onu, N. N. and Okereafor, D. U. (2012). Geophysical sounding for the determination of aquifer hydraulic characteristics from Dar-Zurrock parameters: Case study of Ngor Okpala, Imo River Basin, Southeastern Nigeria. The Pacific Journal of Science and Technology 13(1): 590 – 603.

U.S Department of Transportation, Federal Aviation Administration (2005).Washington, DC.

Wagner, W., Courtney, M., Gottschall, J. and Marsden, P. L. (2011).Accounting for the speed shear in wind turbine power performance measurement. Wiley Online Library ( DOI: 10.1002/we.509. Accessed 22 May 2015.

Weli, V. E. and Ifediba, U. E. (2014). Poor weather and flight operations:Implications for air transport hazard management in Nigeria. Ethiopian Journal of Environmental Studies and Management 7(3):235 – 243. DOI:

Wilson, W. F., Goodrich, K. R. and Carson, S. (2005).Aircraft measurement of terrain-induced wind shear on the approaches to Juneau Airport. National Center for Atmospheric Research.


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